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Finding the Fourth Proportional to 137,299.80, 205,991.28 and 57,376.56

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Solution

The fourth proportional to 137,299.80, 205,991.28 and 57,376.56 is: 86,082.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,299.80 : 205,991.28 = 57,376.56 : x
  2. Step 2: Convert to fraction form
    137,299.80/205,991.28 = 57,376.56/x
  3. Step 3: Cross multiply
    137,299.80x = 205,991.28 × 57,376.56
  4. Step 4: Simplify right side
    137,299.80x = 11,819,071,036.40
  5. Step 5: Solve for x
    x = 11,819,071,036.40/137,299.80
  6. Step 6: Final answer
    x = 86,082.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.